Rough Idle

[ajscef]

Okay so I have a rb20de a31 cefiro and Its shaking while idle and when your stationary around roughly 2000-3000 rpm and Im thinking its the coils but im not to sure as ive pulled the plugs out while running and did that test. I replaced the plugs with the correct plugs and have replaced the fuel filter and was going to put my mates coils in to see if that will fix the problem but havent yet. Was seeing what you guys thought, Cheers. Aaron

[Dan_J]

clean out acc valve or what its called next to the clutch master( or where it should be) thats bolted into the back of the intake mani, theres a guide in the diy section for the clean out

does sound like it could be a weak spark tho,